/*
 * Date Format 1.2.3
 * (c) 2007-2009 Steven Levithan <stevenlevithan.com>
 * MIT license
 *
 * Includes enhancements by Scott Trenda <scott.trenda.net>
 * and Kris Kowal <cixar.com/~kris.kowal/>
 *
 * Accepts a date, a mask, or a date and a mask.
 * Returns a formatted version of the given date.
 * The date defaults to the current date/time.
 * The mask defaults to dateFormat.masks.default.
 */

var dateFormat = function () {
	var	token = /d{1,4}|m{1,4}|yy(?:yy)?|([HhMsTt])\1?|[LloSZ]|"[^"]*"|'[^']*'/g,
		timezone = /\b(?:[PMCEA][SDP]T|(?:Pacific|Mountain|Central|Eastern|Atlantic) (?:Standard|Daylight|Prevailing) Time|(?:GMT|UTC)(?:[-+]\d{4})?)\b/g,
		timezoneClip = /[^-+\dA-Z]/g,
		pad = function (val, len) {
			val = String(val);
			len = len || 2;
			while (val.length < len) val = "0" + val;
			return val;
		};

	// Regexes and supporting functions are cached through closure
	return function (date, mask, utc) {
		var dF = dateFormat;

		// You can't provide utc if you skip other args (use the "UTC:" mask prefix)
		if (arguments.length == 1 && Object.prototype.toString.call(date) == "[object String]" && !/\d/.test(date)) {
			mask = date;
			date = undefined;
		}

		// Passing date through Date applies Date.parse, if necessary
		date = date ? new Date(date) : new Date;
		if (isNaN(date)) throw SyntaxError("invalid date");

		mask = String(dF.masks[mask] || mask || dF.masks["default"]);

		// Allow setting the utc argument via the mask
		if (mask.slice(0, 4) == "UTC:") {
			mask = mask.slice(4);
			utc = true;
		}

		var	_ = utc ? "getUTC" : "get",
			d = date[_ + "Date"](),
			D = date[_ + "Day"](),
			m = date[_ + "Month"](),
			y = date[_ + "FullYear"](),
			H = date[_ + "Hours"](),
			M = date[_ + "Minutes"](),
			s = date[_ + "Seconds"](),
			L = date[_ + "Milliseconds"](),
			o = utc ? 0 : date.getTimezoneOffset(),
			flags = {
				d:    d,
				dd:   pad(d),
				ddd:  dF.i18n.dayNames[D],
				dddd: dF.i18n.dayNames[D + 7],
				m:    m + 1,
				mm:   pad(m + 1),
				mmm:  dF.i18n.monthNames[m],
				mmmm: dF.i18n.monthNames[m + 12],
				yy:   String(y).slice(2),
				yyyy: y,
				h:    H % 12 || 12,
				hh:   pad(H % 12 || 12),
				H:    H,
				HH:   pad(H),
				M:    M,
				MM:   pad(M),
				s:    s,
				ss:   pad(s),
				l:    pad(L, 3),
				L:    pad(L > 99 ? Math.round(L / 10) : L),
				t:    H < 12 ? "a"  : "p",
				tt:   H < 12 ? "am" : "pm",
				T:    H < 12 ? "A"  : "P",
				TT:   H < 12 ? "AM" : "PM",
				Z:    utc ? "UTC" : (String(date).match(timezone) || [""]).pop().replace(timezoneClip, ""),
				o:    (o > 0 ? "-" : "+") + pad(Math.floor(Math.abs(o) / 60) * 100 + Math.abs(o) % 60, 4),
				S:    ["th", "st", "nd", "rd"][d % 10 > 3 ? 0 : (d % 100 - d % 10 != 10) * d % 10]
			};

		return mask.replace(token, function ($0) {
			return $0 in flags ? flags[$0] : $0.slice(1, $0.length - 1);
		});
	};
}();

// Some common format strings
dateFormat.masks = {
	"default":      "ddd mmm dd yyyy HH:MM:ss",
	shortDate:      "m/d/yy",
	mediumDate:     "mmm d, yyyy",
	longDate:       "mmmm d, yyyy",
	fullDate:       "dddd, mmmm d, yyyy",
	shortTime:      "h:MM TT",
	mediumTime:     "h:MM:ss TT",
	longTime:       "h:MM:ss TT Z",
	isoDate:        "yyyy-mm-dd",
	isoTime:        "HH:MM:ss",
	isoDateTime:    "yyyy-mm-dd'T'HH:MM:ss",
	isoUtcDateTime: "UTC:yyyy-mm-dd'T'HH:MM:ss'Z'"
};

// Internationalization strings
dateFormat.i18n = {
	dayNames: [
		"Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat",
		"Sunday", "Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday"
	],
	monthNames: [
		"Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec",
		"January", "February", "March", "April", "May", "June", "July", "August", "September", "October", "November", "December"
	]
};

// For convenience...
Date.prototype.FormatEnhance = function (mask, utc) {
	return dateFormat(this, mask, utc);
};
Date.prototype.Format = function (fmt) { //author: meizz 
    var o = {
        "M+": this.getMonth() + 1, //月份 
        "d+": this.getDate(), //日 
        "h+": this.getHours(), //小时 
        "m+": this.getMinutes(), //分 
        "s+": this.getSeconds(), //秒 
        "q+": Math.floor((this.getMonth() + 3) / 3), //季度 
        "S": this.getMilliseconds() //毫秒 
    };
    if (/(y+)/.test(fmt)) fmt = fmt.replace(RegExp.$1, (this.getFullYear() + "").substr(4 - RegExp.$1.length));
    for (var k in o)
    if (new RegExp("(" + k + ")").test(fmt)) fmt = fmt.replace(RegExp.$1, (RegExp.$1.length == 1) ? (o[k]) : (("00" + o[k]).substr(("" + o[k]).length)));
    return fmt;
}

//替换input中的非数字
function rePlaceUnDigital(obj){
	if(/[^\d]/g.test(obj.value)){
		var pos = getCursorPos(obj);
		var array = obj.value.split("");
		for(var i in array){
			if(/[^\d]/g.test(array[i])){
				pos--;
			}
		}
		obj.value = obj.value.replace(/[^\d]/g,'');
		setCursorPos(obj,pos);
	}
}
//替换input中的空格
function rePlaceSpace(obj){
	if(obj.value.indexOf(' ')>-1){
		var pos = getCursorPos(obj);
		var array = obj.value.split("");
		for(var i in array){
			if(array[i] == " "){
				pos--;
			}
		}
		obj.value = obj.value.replace(new RegExp(' ','gm'),'');
		setCursorPos(obj,pos);
	}
}
/**
 * 设置光标在短连接输入框中的位置
 * @param inpObj 输入框
 * @param pos
 */
function setCursorPos(inpObj, pos){
    if(navigator.userAgent.indexOf("MSIE") > -1){
        var range = document.selection.createRange();
        var textRange = inpObj.createTextRange();
        textRange.moveStart('character',pos);
        textRange.collapse();
        textRange.select();
    }else{
        inpObj.setSelectionRange(pos,pos);
    }
}
/**
 * 获取光标在短连接输入框中的位置
 * @param inpObj 输入框
 */
function getCursorPos(inpObj){
     if(navigator.userAgent.indexOf("MSIE") > -1) { // IE
        var range = document.selection.createRange();
        range.text = '';
        range.setEndPoint('StartToStart',inpObj.createTextRange());
        return range.text.length;
    } else {
        return inpObj.selectionStart;
    }
}
//获取cookie
function getCookie(name){ 
    var arr,reg=new RegExp("(^| )"+name+"=([^;]*)(;|$)");
    if(arr=document.cookie.match(reg))
        return unescape(arr[2]); 
    else 
        return null; 
}
/**
 * 正则表达式实现endWith效果函数
 * @param str 要判断的字符
 **/
String.prototype.endWith = function(str){
  var reg = new RegExp(str+"$");
  return reg.test(this);
}
/**
 * 正则表达式实现startWith效果函数
 * @param str 要判断的字符
 **/
String.prototype.startWith = function(str){     
  var reg = new RegExp("^"+str);     
  return reg.test(this);        
}

//动态加载css
function addCssByLink(url){
	var links=document.getElementsByTagName('link')
	for(var i=0;i<links.length;i++){
		if(links[i].href&&links[i].href.indexOf(url)>-1){
			return;
		}
	}
    var doc=document;
    var link=doc.createElement("link");
    link.setAttribute("rel", "stylesheet");
    link.setAttribute("type", "text/css");
    link.setAttribute("href", url);
    var heads = doc.getElementsByTagName("head");
    if(heads.length)
        heads[0].appendChild(link);
    else
        doc.documentElement.appendChild(link);
}
//动态加载js
function loadJS(url, success){
  	var scripts=document.getElementsByTagName('script')
	for(var i=0;i<scripts.length;i++){
		if(scripts[i].src&&scripts[i].src.indexOf(url)>-1){
			if(success) success();
			return;
		}
  	}
  	var domScript = document.createElement('script');
  	domScript.src = url;
  	success = success || function(){};
  	domScript.onload = domScript.onreadystatechange = function() {
	    if (!this.readyState || 'loaded' === this.readyState || 'complete' === this.readyState) {
	      	success();
	      	this.onload = this.onreadystatechange = null;
	      	//this.parentNode.removeChild(this);
	    }
  	}
  document.getElementsByTagName('head')[0].appendChild(domScript);
}
//判断对象是否为空对象{}
function isNullObj(obj){
    for(var i in obj){
        if(obj.hasOwnProperty(i)){
            return false;
        }
    }
    return true;
}